package thread;
/**
 * 静态方法如果使用synchronized修饰，那么该方法一定具有同步效果，锁的都只能是当前类
 */
public class SyncDemo2 {
    public static void main(String[] args) {
        Thread t1 = new Thread(Boo::doSome);
        Thread t2 = new Thread(Boo::doSome);
        t1.start();
        t2.start();
    }
}

class Boo{
    //public synchronized static void doSome(){ //锁的为当前类对象
    public static void doSome(){
        synchronized(Boo.class) { //Boo.class为当前类对象
            try {
                Thread t = Thread.currentThread();
                System.out.println(t.getName() + ":正在执行doSome方法");
                Thread.sleep(3000);
                System.out.println(t.getName() + ":执行doSome方法完毕");
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}


















